CombineFileInputFormat does not work with paths not on default FS like ASV

Details

Description

CombineFileInputFormat does not work with ASV. This appeared as an issue in Sqoop which failed to export files in ASV. CombineFileInputFormat strips out the scheme and authority components of the path, after which point the path is assumed to be on the default file system.
Sqoop has it own copy of CombineFileInputFormat, but updated the ones in core as well for consistency.